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(No Model.)

L. HEYDT.

STEERING APPARATUS.

No. 313,733. Patented Mar. 10 1885.

NITED STATES PATENT OFFICE.

LEONHARD HEYDT, OF STRASBURG, ALSACE, GERMANY..-

STEERING APPARATUS.

SPECIFICATION forming part-of Letters Patent No. 313,733, dated March 10, 1885.

Application filed August 25, 1884. (No modeLl Patented in Germany May 16, 1884, No. 30,276; in France August 12. 1884, and in England December 3|, 1884, No. 17,101.

To all 1071,0127, it may concern:

Be it known that I, LEONHARD HEYDT, a subject of the Emperor of Germany, residing at Strasburg, Alsace, Germany, have invented certain new and useful Improvements in Steering Apparatus, of which the following is a specification.

My invention relates to that class of steering apparatus for screw-steamers in which a cylindrical rudder is arranged around the propeller, the object of my invention being to so construct the rudder as to make the steering and turning of the vessel more rapid and easy than with rudders of this character as hereto- 15 fore made.

rudder in section; and Fig. 4 is a sectional plan of the rudder, showing the vessel in diagrammatic outline.

A is the screw-propeller, around which is the rudder B in the form of a hollow cylinder or tube open at both ends. This cylinder-is provided with journals mounted in vertical bearings, and the upper journal is prolonged into the stem D, through the medium of which the rudder is turned on its axis formed by these journals. drical rudder are fixed, in avertical position, two tangential wings, O O, on opposite sides, these wings being of the concave outwardlybent form shown in Fig. 3. When the rudder is turned one way or the other, as shown in Fig. 4, to steer the vessel, it will be observed that these wings present surfaces offering a more effective resistance to the water in steering than if the outside of the rudder were of the usual cylindrical form.

I claim as my invention The herein-described rudder for screw-propellers, said rudder consisting of a cylinder having two bent tangential wings, O G, secured in a vertical position on opposite sides to the outer surface, substantially as set forth.

G. RIUsoH, FERD REIFERHEN.

To the outside of this cy1in- 

